Ribbon spool for typewriters



HUH'

med Anm s; 1920 O A HOKANSON RIBBON SPOOL FOR TYPEWRITERS Oct. Z 1923.

Patented @ein 2, i223.

entre (sterne reitet OTTO A. HoKaNsoN, or wooiisTocK, ILLINOIS,AssIc-N'ORTO wooijsTooK TYrEwnITnR COMPANY, or wooDsTooK, ILLINOIS, ACORPORATION or ILLINOIS.;

RIBBON srooL no Application alea api-n 5,

To all whom/t may cof/wem:

Be it known that I, O TTO A; HoKANsoN, a citizen of ythe United States,Vresidingat l/Voodstock, in the county of McHenry and` State ofIllinois, have invented certain new and vuseful Improvements in RibbonSpools for rl`ypewriters, of' which the following is a specification. l

This invention has forits object the pro- Avisio'nfo a device of theclass namedV which shall be of improved construction and operation.

The invention Vis'exeinplified in the combination and-,arrangement 'ofparts shown in the accompanying drawing and described in the followingspecification, and itA is more particularly pointed out in the appendedclaims.

In the d rawing-V l- Fig.v 1 is an elevation of a ribbon spool embodyingone forin'offthe present invention;

Fig. is atop plan view snown Vin Fig. 1; Y v.

Fig.v 3 is a vertical Section of aribbon spool showing a slightlymodified orinotA theinvention; and i Fig. 4l' is a fragmentary top planview of 'a portion of the device shown in Fig. 3.

In the embodiments: of the invention shown in the drawing, the partsVare all made o'stam'pedisheet metaland thespool includes atop rim orflangelO anda lower j ofv the spool fiange 11i.y 'ABetween the flanges10 and 11 there is interposed the spool core 12 which isa vsheetot metalbentl in the forni ofza hollow cylinder. The sheet metalvcore 1 2 hasits edges spaced apart however to leave an Aopening between the edges atone side of the spool, as shown at 13. The ends of the core member 12are provided with tongues 14 which project through slots 15 in theflanges 10 and 1 1'. and are bent over to secure the parts of the spooltogether.Y rlhe slots 15 are formed in a rib 16 struck outwardly fromthe flanges 10 and 11 and curved to conform to the shape ofthe coremember 12. The upper iiange '10, as illustrated, is also provided with astrengthening rib 17 near the outer edge of the flange. lt may also becut away, as shown in broken lines at 18 in Fig. 2 of the drawing, andbe provided with radial ribs 19 extending along 1 the spokes formed bythe cut-away portions 18. A circular opening 2,0 is preferably 1920.serial No. 371,216.

to rotate the spooljby hand. l i

'A portion of the lower flangevr 11' is punched from the flange,asfshown" at 21,1a-nd bentV inwardly, leaving an opening inthe'lowerflange adjacent thespace '13 L'bet'ween the edges of tliecoreineinberl2;f- This opening is for the'purposeofadniitting ja control finger tocooperate'with the ribbon for reversing thefdirectionjo't 'rotation etthe spoQls lin a 'manner-'well known in the art. The `materialpun'ched-froin thel opening 21 is not entirely severed from theflan'ge- 11, but'remains intactv with the remaining portiony of the flange along theinner fedge 22 Vof the opening 2 1. rlh'is cut-out -portion isbentinwardly to form 4a' tongue 23vsh`own n in brokeny lines in Fig. 1.V`vIt 'will' be' noted that the opening-inFig2lisprovided with lateral'projections21l which' result-iiil wings 25 on 'the inwardlyV fbenttongue 23.' These,- j

wings 25j-rrel bent-,intofc'irciilar formation,

as shown in Fig. '2, so that they ormabearing for the ribbon spoolshafty and. a guide for.directingthe'spool onto the shaft. llVheresuoh'la bearing is provided the ribbonspool sliaft'may be sh'orter'thanwould otherwise f be necessaryjfor the reason that thelshaftv doesnotneed to extend upwardly through the opening the upper flange 1Q-to'pro- "vide an upper bearing lfor the spool.

.. In order 'toattachthe end of the lribbon to the core member 12barbs'26 are punched from'A the core i member and larebent out'- lwardlyfrom the-surface of." the core member so that they may penetrate theribbonQV 'Two setsof Vbarbs Y26 are provided, as shown in Fig. 2, thebarbsof' the different sets "being pointed in opposite direction.V Thismakes it possible to secure the ribbon to the spool so as4V to be woundthereon in either direction and permits each Vspool to be used on eitherthe lettv ory thevright-hand side of the typewriter. This arrangementVis :also useful ety where both ends ofthe spool are alike as it willpermit the spool to be used with l either side up.

In the forni of 4the kinvention shown in Figs. 3 and 4 the punched intongue. 27 is struck from a rectangular opening 28 and the projectingwings shown at 25 in Figs. and 2 are omitted. The Arectangular tongue27is, however, shaped to provide aA Y curved bearing or guide 29 havingthe same radius-of curvature as the opening 30 in the lower flangell.-vThis provides aibearing for the ribbon spool shaft intermediate fiangesand spaced inwardly from thereof I said spool as a center to form abearing i .it is sufficient to answer 'spool and to providean openingVmaterial, a core member of Vsheet the flanges l0 and ll, and althoughthe bearing does notueompletely surround' the shaft,

the purpose of holding the spool and of guiding the spool onto theshaft. Y

l elaim:- i 1. A' ribbon spool for typewriters having aiiend flange ofsheetmetal, said flange having a portion partially severed therefrom andbent inwardly-toward the axis of said spool to forma bearing member forsaid through said. flange outside of said bearing-member. 2. A ribbonspool for typewriters comprising a pairof end flanges connected by a.hollow core member`r one of said flanges having a portion partially,severed therefrom and bent inwardly to a position between said the wallof saideore member, said inwardly. bent portion being curved to formavbearingjfor a ribbon spoolshaft.

`3. A ribbon spool for typewriters having anend flange of sheet metal,said flange having a portion severed therefrom alongapart of theperipherery surrounding vsaid severed portion, said portion being bentinwardly along the .unsevered part of thelperiphery and being-*curvedabout the axis of member for said spoolfor engaging a Vribbon spoolshaft. I y

A ribbon spool for typewriters compr-ising material bent intocylindrical formation and secured V'to said end fianges, said coremember having anuopening at one side thereof, one of said lianges havingva yportion partially severed .therefrom adjaeentthe openingiii saideore memben said partially .severed portion being bent` inwardly andcurved about the aXis of said spool as a center to form abearing memberfor said spool arranged to enga-ge a ribbon spool shaft. f

5. A ribbonl spool for typewriters having a :pair of end flanges ofsheet an end flange of sheet metal, said flange having a substantiallyrectangular iportion severed therefrom along three sides thereof, saidportion being fourth side thereof: the, edges of said inwa'rdlyv bentportion being euri/edito forni a bearing member for said spool arrangedto Yengage a ribbon spool shaft.

6; A ribbon spool for 'typewriters eomprising end flanges spaced fromxone another, and a guide positionedv intermediate said flanges fordirecting saidspool ontoa ribbon spool shaft, said guidepbeing taperedtoward the center of the spool from the end thereof at whichV the shaftenters lthe spool.

7. A ribbon spool for typewriters coin-` p'rising end flanges'spa'ced'from one another` and a guide member supported from one of said flangesand arranged inteimediatesaid bent inwardly along the flanges fordirecting said spoolV onto a" ribbon spoolsliaft, one end of said spoolbeing provided with a bearing for the'shafnsaid guide being taperedtoward the center of the spool from said end. `v f y 8. ,if-i ribbonspoolpfor typewriters coniprising a core memben'and raguide'arrangedadjacent the axis of `said core member and Y inwardly from 'the endsthereof for K spaced directing said spool onto, a ribbon' spool shaft,one end of said spool being provided with a bearing for the shaft, saidguide being tapered toward the center of lthe spool from said end. i 9.A ribbonv spool for typewriters coniprising a pair of end flangesl acore member for spacing said -flanges relative tov oney "another, andapro3ection secured to one of Y said flanges and extending toward theother thereof but spaced from saidl other flangel vsaid projectionhavingl a guide member thereon for engaging a ribbon spool shaftto guidesaid spool onto said shaft,

the end of said spool havingsaid projection thereon being also'proyidedYwith a bearing for said shaft substantially in the plane ofsaid end.V

-In testimony whereof I have signed my naine tothis specification onthis 30th day of March A. l). 1920. i y

V '@TTG A. 'H-OKANSON.

